While watching last week’s premier of season six of “The Walking Dead”, we were brought up to date with the clever use of flashbacks. Rick Grimes and Morgan come off as scary men to the people of Alexandria. What do they know? It just takes one accident or an act of sabotage, like a well-timed honking of a horn, to bring the swarm of walkers into the town. Morgan is going to need his Bo staff because some of Alexandria’s enemies aren’t the shuffling dead.